1919. Topics covered in the 12 lessons include: Concentration Rightly and Wrongly Used; Character of Thoughts We Think; Thought Habits; Inharmonious Thought Habits; Consciousness and Thought Habits; I''ll Try Thought Habit; Overcoming Self-Consciousness; Law of Harmony; Law of Force; Oneness of All Life; Individuality; and Will Power. F. W. Sears, Books, Religion and Spirituality, Concentration and Will Power a Correspondence Course in Twelve Lessons Books>Religion and Spirituality 1919. Topics covered in the 12 lessons include: Concentration Rightly and Wrongly Used; Character of Thoughts We Think; Thought Habits; Inharmonious Thought Habits; Consciousness and Thought Habits; I'll Try Thought Habit; Overcoming Self-Consciousness; Law of Harmony; Law of Force; Oneness of All Life; Individuality; and Will Power.